Mock sample for your project: TransitFeeds API

The GeoDB API focuses on getting global city and region data. Easily obtain country, region, and city data for use
in your apps!
Filter cities by name prefix, country, location, time-zone, and even minimum population.
Sort cities by name, country code, elevation, and population - or any combination of these.
Get all country regions. Get all cities in a given region.
Display results in multiple languages. RESTful API adheres to industry best-practices, including
HATEOAS-style links to facilitate paging results.
Backed by cloud-based load-balanced infrastructure for resiliency and performance!
Data is periodically refreshed from GeoNames and WikiData.
Notes:
Since the database is periodically updated, this may very rarely result in certain cities
being marked deleted (e.g., duplicates removed). By default, endpoints returning city data will exclude
cities marked deleted. However, in the unlikely event that this occurs while your app is paging through a set
of affected results - and you care about the paged results suddenly changing underneath - specify
includeDeleted=SINCEYESTERDAY (or SINCELAST_WEEK if you're really paranoid!).
Useful Resources
SDKs
Angular,
Sample App
Java
JavaScript
Swagger Docs
Usage License

Use this JSON API to build and test radio links for any radio, anywhere. Authenticate with your API2.0 key in the request header as key

Global marine weather data from multiple sources in one single API with hourly resolution. Get your API key by visiting the Storm Glass web site.

Before using this API, we recommend you read our Authorization Guide for more information on how to generate an access token.
Please also be aware that our test environment is based on a subset of the production, if you are not returning any results try with big cities/airports like LON (London) or NYC (New-York).

Convert an OSGB36 easting and northing (British National Grid) to WGS84 latitude and longitude.

Worldwide forward and reverse geocoding

Instantly access empirical models of atmospheric density and composition that are recommended by the Committee on Space Research (COSPAR) for satellite drag calculations.
API requests must contain a key "API-Key" in the header (see code samples). Obtain a key from here.
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Amentum Pty Ltd is not responsible nor liable for any loss or damage of any sort incurred as a result of using the API.
Copyright Amentum Pty Ltd 2021.

Positioning API accepts requests with radio network measurements and replies with corresponding location estimate. For more details and examples, see Developer's Guide. Cellular measurements are given in terms defined in 3GPP and 3GGP2 specifications, see the corresponsing documentation at http://www.3gpp.org.
Breaking changes from v1:
JSON fields
altaccuracy, baselat, baselng, cellparams, pilotpower, pnoffset, powrx, rxlevel,
have been deprecated and replaced with
altAccuracy, baseLat, baseLng, cellParams, pilotPower, pnOffset, rss, rxLevel
respectively.
Dependent parameters combined as a subobject.
CDMA, GSM, WCDMA, TD-SCDMA and LTE local identification parameters for serving cell moved under localId property.
GSM neighbor global ID: lac and cid for neighbor cell moved under globalIdentity property.

A simple API to get the current time based on a request with a timezone.

The Google My Business API provides an interface for managing business location information on Google.

Routing consists of the following service:
Calculate Route
Calculates a route between an origin and a destination, passing through waypoints (if specified). Additional routing parameters like traffic, avoidance conditions, departure/arrival time etc. can be taken into account.
Calculate Reachable Range
Calculates a set of locations that can be reached from the origin point, subject to the available fuel or energy budget that is specified in the request.